Vision Function

Often, it is the classroom teacher that is the first to observe that a child may be having vision difficulties. Any kind of vision impairment can impact a student's ability to participate fully in classroom activities, for example, seeing the board clearly or interacting with peers in group activities, especially those involving reading and writing. Children with vision difficulties struggle to keep up with the demands of their curriculum.

A visual impairment results from
  • Having an eye disorder which causes a loss of functional vision,
  • Can vary from mild to severe, and
  • Can be congenital or happen by chance.
The degree of loss may be described as low vision, legally blind, and totally blind. The continuum of services a student may receive is based on individual needs and range from least restrictive (public school with itinerant services), public school with resource room access, separate class, or to a more restrictive setting, such as a residential school for blind students. By law, assistive technology must be considered for all students with an IEP.

~ Visual impairment or low vision is a severe reduction in vision that cannot be corrected with standard glasses or contact lenses and reduces a person's ability to function at certain or all tasks.

~ Legal blindness (which is actually a severe visual impairment) refers to a best-corrected central vision of 20/200 or worse in the better eye or a visual acuity of better than 20/200 but with a visual field, no greater than 20° (e.g., side vision that is so reduced that it appears as if the person is looking through a tunnel).

We are a "print rich" society, with visual representation used to support the learning process. Therefore the type and severity of a student's impairment may have an impact on the ability to access materials in the classroom and participate in curricular activities. The impacts of a visual impairment can be mild, in which only an accommodation may be needed, such as preferential seating. But a student with a moderate or severe impairment may need the provision of accommodations and assistive technology to be successful. Some students may need to use a different mode of learning, including tactual and/or auditory.

Teaching students with Visual Impairments

https://www.youtube.com/watch?v=dPC_--R-Ma0


Devices to assist Students with Visual Impairments

Non-optical devices
Optical devices
"Low-tech" Assistive Technology
"High-tech" Assistive Technology
Examples of Software
Examples of Assistive Technology Materials
(low cost tools, intended to improve residual vision and /or compensate for loss of vision.)
(increase or decrease the size of the material the student is accessing)

(including software and electronic materials)


  • Reading stand
  • Bold line or raised line paper
  • Hat or sunglasses to decrease glare or sensitivity to light
  • Bold pens/markers
  • Large print
  • Desk lamp
  • Items used to create tactile graphics or raised line drawings
(Wikki Stix, foam shapes, sandpaper, etc.)
  • White cane
  • Glasses
  • Contacts
  • Transition lenses
  • Telescopes
  • Magnifiers
  • Braille writer
  • Talking or large-print display calculator
  • Talking liquid-level indicator
  • Beeper ball
  • Braille or large print ruler, protractor, number line
  • Slate and stylus
  • Signature guide
  • Abacus
  • Braille
  • Tactile graphics
  • Tactile or large print games
  • Closed circuit television
  • Video magnification device
  • Braille embosser
  • Refreshable Braille display
  • Electronic Braille writer
  • E-book readers
  • Digital talking book player
  • Scanner
  • Laptop or desktop computer
  • Accessible touch tablet
  • Electronic whiteboard
  • Talking global positioning systems
  • Electronic travel aids (laser cane, talking compass, etc.)
  • Screen reading software
  • Screen enlargement/magnification software
  • Optical Character Recognition
  • Braille translation program
  • Audio-described videos
  • Digital books on CD or in other accessible formats such as MP3 or DAISY

Some suggestions to assist a student with visual impairment in the classroom

  1. Read the IEP for all pertinent information.
  2. Verbalize everything. When writing information on a white board, presenting a powerpoint, or providing a demonstration, all students will benefit from hearing it and seeing it. For the student with a vision impairment, it doesn't hurt to "over-verbalize."
  3. Don't ask a student with a vision impairment, "What do you see" or "Can you see..." but observe the behavior. A student with low vision may be able to navigate the school campus and recognize friends in face-to-face situations, but may be unable to do so while looking at them through car or bus windows.
  4. Allow flexibility so the student with a visual impairment can determine what works best for him or her. For instance, allow a friend to quietly verbalize any action that isn't verbalized in a video.
  5. Allow the student to use "touch" as a teaching tool. Tactile techniques benefit many individuals, but tactile clues help the student learn about the environment to a greater extent.
  6. Have readily available the tools that are identified for the student in the student's IEP, to eliminate any unnecessary down time.
  7. Keep it low key. Don't make a big deal about the student or the techniques or equipment that may be different. Be up front and keep a productive attitude that encourages others to be supportive.
  8. Expect the student to be independent. While it may take a little time to become accustom to any special tools the student may use, it is important that independence is achieved through personal note taking rather than the help of a scribe. This will be an important lesson for the student to have outside the classroom, when a scribe isn't readily available.
  9. Expect the student to do the work - don't excuse him/her from assignments. Work with others to determine the tools the student may need to accomplish the goals outlined in your class. Keep your expectations high.
  10. Keep a positive attitude. Some things will be easier to accomplish than others. For many student with visual impairments, their vision may not get any better, so, for the student's sake, it is best to be positive about the student's current accomplishments to foster his/her desire to continue on a forward path.

Information and Resources ---


Production of accessible instructional materials for students who are blind or who have other print disabilities
National Instructional Materials Accessibility Standards (NIMAS)
http://aem.cast.org/creating/national-instructional-materials-accessibility-standard-nimas.html#.WK4CUpOQkV0

Access the link below to learn about Florida’s resource center for obtaining specialized materials (Braille, digital, large print textbooks) for students with visual impairments.
Florida Instructional Materials Center for the Visually Impaired (FIMC-VI)
http://www.fimcvi.org/

Access the link below to learn about the largest nonprofit organization that produces books in accessible formats for persons who are visually impaired.
American Printing House for the Blind, Inc.
www.aph.org

Access the link below to learn about a free online searchable library to obtain accessible books and periodicals for readers with print disabilities.
Bookshare
http://www.bookshare.org/

Vision disability resource guide
Humanware


http://www.humanware.com/en-usa/home


Access the link below to learn about a resource which holds more than 70,000 accessible and downloadable textbooks and literature titles.
Learning Ally
http://www.learningally.org



Access the link below to learn about a free library program which gives access to Braille and audio materials.
National Library Service for the Blind and Physically Handicapped
http://www.loc.gov/nls/

Considerations for Low Vision Students in a Classroom
Texas School for the Blind and Visually Impaired
http://www.tsbvi.edu/program-and-administrative-resources/3277-considerations-for-low-vision-students-in-a-classroom

Possible Accommodations for the Student With a Visual Impairment
The National Organization for Albinism and Hypopigmentation (NOAH)
http://www.albinism.org/atf/cf/%7BF9C8AAE8-DE7A-4923-BC56-52ABED8FD74D%7D/SchoolKit%20Section%20III%20Possible%20Accommodations%20for%20the%20Student.pdf

A national program that can help those with significant combined vision and hearing loss.
iCanConnect
http://www.icanconnect.org/#

Optical Character Recognition Systems
American Foundation for the Blind
http://www.afb.org/Section.asp?SectionID=4&TopicID=31&DocumentID=1283

Vision Loss Simulation
http://www.acbvi.org/Vision/index.html

Impact of Visual Impairment on Development
Chris Strickling
Texas School for the Blind and Visually Impaired
http://www.tsbvi.edu/infants/3293-the-impact-of-visual-impairment-on-develop

Perkins Scout
Literacy for Students with Low Vision
An Information Clearinghouse on Blindness and Visual Impairment
http://www.perkins.org/resources/scout/literacy-and-braille/literacy-for-low-vision.html

Braille/Print Literacy Issues and the Learning Media Assessment
Eva Lavigne and Ann Adkins
Texas School for the Blind and Visually Impaired Outreach
http://tsbvi.edu/seehear/spring03/literacy.htm

Visual Impairments
Project Ideal
Texas Council for Developmental Disabilites
http://www.projectidealonline.org/v/visual-impairments/

Glossary of Eye Conditions
American Foundation for the Blind
http://www.afb.org/Section.asp?SectionID=93

Exceptional Student Education Eligibility for Students Who Are Visually Impaired
Florida Department of Education
https://www.flrules.org/gateway/ruleNo.asp?id=6A-6.03014

Florida School for the Deaf and Blind

http://www.fsdb.k12.fl.us/

The Role and Function of the Teacher of Students with Visual Impairments
Susan Jay Spungin and Kay Alicyn Ferrell
http://www.afb.org/foe/book.asp?ch=v2appC

SmartView Versa - The Versatile Handheld Video Magnifier for low vision (Video Enlargement Device)
http://www.youtube.com/watch?v=8f9qic6AmRk

KNFB Reader
Developed through a collaborative partnership, this iPhone, iPad, Android app is considered faster and, at $99.99, less expensive than most other portable readers.
http://www.knfbreader.com/

Downloadable Fonts
Texas School for the Blind and Visually Impaired - Download Braille and ASL specialty fonts. Many other resources, including at cost and free publications, are found on this site.
http://www.tsbvi.edu/braille-resources/1087-download-braille-and-asl-specialty-fonts

iPad, Android, and other resources for the visually impaired

http://appadvice.com/applist_ipad_client_view/apps-for-the-visually-impaired
http://www.applevis.com/apps/ios-apps-for-blind-and-vision-impaired
http://www.pinterest.com/wonderbabyorg/best-ipad-apps-for-blind-kids/
https://www.afb.org/afbpress/pub.asp?DocID=aw170208
Vision Sense Polaris (HIMS) https://youtu.be/UdYjgQpi464



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